I recently restored my 1959 348 impala and have noticed an intermittent engine cut off problem. The engine either at idle, or at a steady speed, whether hold or cold, and intermittently at no specific time or circumstance, will suddenly cut off, like someone is turning off the ignition switch. If you then re start the car it will start immediately and run fine again like it never happened. Again this happens whether at idle, or at a steady speed and whether the engine is hot or cold. Aside from this issue the car runs beautifully, idles perfectly and has no other issues. All the fuel lines have been replaced from the tank forward, the car has new points, condenser, cap, wires, new plugs...new carbs (tripower) which were all rebuilt with new linkage, new ignition switch. Does anyone have any suggestions as to what this can be and how to remedy it?